static uint8_t *fpga_image_ptr = NULL;
static uint32_t uncompressed_bytes_cnt;
-#define OUTPUT_BUFFER_LEN 80
+#define OUTPUT_BUFFER_LEN 80
//-----------------------------------------------------------------------------
// Set up the Serial Peripheral Interface as master
// Disable PIO control of the following pins, allows use by the SPI peripheral
AT91C_BASE_PIOA->PIO_PDR =
- GPIO_NCS0 |
- GPIO_NCS2 |
- GPIO_MISO |
- GPIO_MOSI |
+ GPIO_NCS0 |
+ GPIO_NCS2 |
+ GPIO_MISO |
+ GPIO_MOSI |
GPIO_SPCK;
AT91C_BASE_PIOA->PIO_ASR =
- GPIO_NCS0 |
- GPIO_MISO |
- GPIO_MOSI |
+ GPIO_NCS0 |
+ GPIO_MISO |
+ GPIO_MOSI |
GPIO_SPCK;
AT91C_BASE_PIOA->PIO_BSR = GPIO_NCS2;
switch (mode) {
case SPI_FPGA_MODE:
AT91C_BASE_SPI->SPI_MR =
- ( 0 << 24) | // Delay between chip selects (take default: 6 MCK periods)
- (14 << 16) | // Peripheral Chip Select (selects FPGA SPI_NCS0 or PA11)
- ( 0 << 7) | // Local Loopback Disabled
- ( 1 << 4) | // Mode Fault Detection disabled
- ( 0 << 2) | // Chip selects connected directly to peripheral
- ( 0 << 1) | // Fixed Peripheral Select
- ( 1 << 0); // Master Mode
+ ( 0 << 24) | // Delay between chip selects (take default: 6 MCK periods)
+ (14 << 16) | // Peripheral Chip Select (selects FPGA SPI_NCS0 or PA11)
+ ( 0 << 7) | // Local Loopback Disabled
+ ( 1 << 4) | // Mode Fault Detection disabled
+ ( 0 << 2) | // Chip selects connected directly to peripheral
+ ( 0 << 1) | // Fixed Peripheral Select
+ ( 1 << 0); // Master Mode
AT91C_BASE_SPI->SPI_CSR[0] =
- ( 1 << 24) | // Delay between Consecutive Transfers (32 MCK periods)
- ( 1 << 16) | // Delay Before SPCK (1 MCK period)
- ( 6 << 8) | // Serial Clock Baud Rate (baudrate = MCK/6 = 24Mhz/6 = 4M baud
- ( 8 << 4) | // Bits per Transfer (16 bits)
- ( 0 << 3) | // Chip Select inactive after transfer
- ( 1 << 1) | // Clock Phase data captured on leading edge, changes on following edge
- ( 0 << 0); // Clock Polarity inactive state is logic 0
+ ( 1 << 24) | // Delay between Consecutive Transfers (32 MCK periods)
+ ( 1 << 16) | // Delay Before SPCK (1 MCK period)
+ ( 6 << 8) | // Serial Clock Baud Rate (baudrate = MCK/6 = 24Mhz/6 = 4M baud
+ ( 8 << 4) | // Bits per Transfer (16 bits)
+ ( 0 << 3) | // Chip Select inactive after transfer
+ ( 1 << 1) | // Clock Phase data captured on leading edge, changes on following edge
+ ( 0 << 0); // Clock Polarity inactive state is logic 0
break;
case SPI_LCD_MODE:
AT91C_BASE_SPI->SPI_MR =
- ( 0 << 24) | // Delay between chip selects (take default: 6 MCK periods)
- (11 << 16) | // Peripheral Chip Select (selects LCD SPI_NCS2 or PA10)
- ( 0 << 7) | // Local Loopback Disabled
- ( 1 << 4) | // Mode Fault Detection disabled
- ( 0 << 2) | // Chip selects connected directly to peripheral
- ( 0 << 1) | // Fixed Peripheral Select
- ( 1 << 0); // Master Mode
+ ( 0 << 24) | // Delay between chip selects (take default: 6 MCK periods)
+ (11 << 16) | // Peripheral Chip Select (selects LCD SPI_NCS2 or PA10)
+ ( 0 << 7) | // Local Loopback Disabled
+ ( 1 << 4) | // Mode Fault Detection disabled
+ ( 0 << 2) | // Chip selects connected directly to peripheral
+ ( 0 << 1) | // Fixed Peripheral Select
+ ( 1 << 0); // Master Mode
AT91C_BASE_SPI->SPI_CSR[2] =
- ( 1 << 24) | // Delay between Consecutive Transfers (32 MCK periods)
- ( 1 << 16) | // Delay Before SPCK (1 MCK period)
- ( 6 << 8) | // Serial Clock Baud Rate (baudrate = MCK/6 = 24Mhz/6 = 4M baud
- ( 1 << 4) | // Bits per Transfer (9 bits)
- ( 0 << 3) | // Chip Select inactive after transfer
- ( 1 << 1) | // Clock Phase data captured on leading edge, changes on following edge
- ( 0 << 0); // Clock Polarity inactive state is logic 0
+ ( 1 << 24) | // Delay between Consecutive Transfers (32 MCK periods)
+ ( 1 << 16) | // Delay Before SPCK (1 MCK period)
+ ( 6 << 8) | // Serial Clock Baud Rate (baudrate = MCK/6 = 24Mhz/6 = 4M baud
+ ( 1 << 4) | // Bits per Transfer (9 bits)
+ ( 0 << 3) | // Chip Select inactive after transfer
+ ( 1 << 1) | // Clock Phase data captured on leading edge, changes on following edge
+ ( 0 << 0); // Clock Polarity inactive state is logic 0
break;
- default: // Disable SPI
+ default: // Disable SPI
AT91C_BASE_SPI->SPI_CR = AT91C_SPI_SPIDIS;
break;
}
// Set up the synchronous serial port with the set of options that fits
// the FPGA mode. Both RX and TX are always enabled.
//-----------------------------------------------------------------------------
-void FpgaSetupSsc(uint8_t FPGA_mode)
-{
+void FpgaSetupSsc(uint16_t FPGA_mode) {
// First configure the GPIOs, and get ourselves a clock.
AT91C_BASE_PIOA->PIO_ASR =
- GPIO_SSC_FRAME |
- GPIO_SSC_DIN |
- GPIO_SSC_DOUT |
+ GPIO_SSC_FRAME |
+ GPIO_SSC_DIN |
+ GPIO_SSC_DOUT |
GPIO_SSC_CLK;
AT91C_BASE_PIOA->PIO_PDR = GPIO_SSC_DOUT;
// Now set up the SSC proper, starting from a known state.
AT91C_BASE_SSC->SSC_CR = AT91C_SSC_SWRST;
- // RX clock comes from TX clock, RX starts when TX starts, data changes
- // on RX clock rising edge, sampled on falling edge
+ // RX clock comes from TX clock, RX starts on Transmit Start,
+ // data and frame signal is sampled on falling edge of RK
AT91C_BASE_SSC->SSC_RCMR = SSC_CLOCK_MODE_SELECT(1) | SSC_CLOCK_MODE_START(1);
// 8, 16 or 32 bits per transfer, no loopback, MSB first, 1 transfer per sync
// pulse, no output sync
- if ((FPGA_mode & 0xe0) == FPGA_MAJOR_MODE_HF_READER_RX_XCORR) {
+ if ((FPGA_mode & FPGA_MAJOR_MODE_MASK) == FPGA_MAJOR_MODE_HF_READER && FpgaGetCurrent() == FPGA_BITSTREAM_HF) {
AT91C_BASE_SSC->SSC_RFMR = SSC_FRAME_MODE_BITS_IN_WORD(16) | AT91C_SSC_MSBF | SSC_FRAME_MODE_WORDS_PER_TRANSFER(0);
} else {
AT91C_BASE_SSC->SSC_RFMR = SSC_FRAME_MODE_BITS_IN_WORD(8) | AT91C_SSC_MSBF | SSC_FRAME_MODE_WORDS_PER_TRANSFER(0);
- }
+ }
- // TX clock comes from TK pin, no clock output, outputs change on falling
- // edge of TK, sample on rising edge of TK, start on positive-going edge of sync
- AT91C_BASE_SSC->SSC_TCMR = SSC_CLOCK_MODE_SELECT(2) | SSC_CLOCK_MODE_START(5);
+ // TX clock comes from TK pin, no clock output, outputs change on rising edge of TK,
+ // TF (frame sync) is sampled on falling edge of TK, start TX on rising edge of TF
+ AT91C_BASE_SSC->SSC_TCMR = SSC_CLOCK_MODE_SELECT(2) | SSC_CLOCK_MODE_START(5);
// tx framing is the same as the rx framing
AT91C_BASE_SSC->SSC_TFMR = AT91C_BASE_SSC->SSC_RFMR;
// ourselves, not to another buffer). The stuff to manipulate those buffers
// is in apps.h, because it should be inlined, for speed.
//-----------------------------------------------------------------------------
-bool FpgaSetupSscDma(uint8_t *buf, uint16_t sample_count)
-{
+bool FpgaSetupSscDma(uint8_t *buf, uint16_t sample_count) {
if (buf == NULL) return false;
AT91C_BASE_PDC_SSC->PDC_PTCR = AT91C_PDC_RXTDIS; // Disable DMA Transfer
AT91C_BASE_PDC_SSC->PDC_RPR = (uint32_t) buf; // transfer to this memory address
AT91C_BASE_PDC_SSC->PDC_RCR = sample_count; // transfer this many samples
AT91C_BASE_PDC_SSC->PDC_RNPR = (uint32_t) buf; // next transfer to same memory address
- AT91C_BASE_PDC_SSC->PDC_RNCR = sample_count; // ... with same number of samples AT91C_BASE_PDC_SSC->PDC_PTCR = AT91C_PDC_RXTEN; // go!
-
+ AT91C_BASE_PDC_SSC->PDC_RNCR = sample_count; // ... with same number of samples
+ AT91C_BASE_PDC_SSC->PDC_PTCR = AT91C_PDC_RXTEN; // go!
return true;
}
//----------------------------------------------------------------------------
// Uncompress (inflate) the FPGA data. Returns one decompressed byte with
-// each call.
+// each call.
//----------------------------------------------------------------------------
static int get_from_fpga_combined_stream(z_streamp compressed_fpga_stream, uint8_t *output_buffer)
{
- if (fpga_image_ptr == compressed_fpga_stream->next_out) { // need more data
+ if (fpga_image_ptr == compressed_fpga_stream->next_out) { // need more data
compressed_fpga_stream->next_out = output_buffer;
compressed_fpga_stream->avail_out = OUTPUT_BUFFER_LEN;
fpga_image_ptr = output_buffer;
}
uncompressed_bytes_cnt++;
-
+
return *fpga_image_ptr++;
}
}
return get_from_fpga_combined_stream(compressed_fpga_stream, output_buffer);
-
+
}
//----------------------------------------------------------------------------
-// Initialize decompression of the respective (HF or LF) FPGA stream
+// Initialize decompression of the respective (HF or LF) FPGA stream
//----------------------------------------------------------------------------
static bool reset_fpga_stream(int bitstream_version, z_streamp compressed_fpga_stream, uint8_t *output_buffer)
{
uint8_t header[FPGA_BITSTREAM_FIXED_HEADER_SIZE];
-
+
uncompressed_bytes_cnt = 0;
-
+
// initialize z_stream structure for inflate:
compressed_fpga_stream->next_in = &_binary_obj_fpga_all_bit_z_start;
compressed_fpga_stream->avail_in = &_binary_obj_fpga_all_bit_z_end - &_binary_obj_fpga_all_bit_z_start;
for (uint16_t i = 0; i < FPGA_BITSTREAM_FIXED_HEADER_SIZE; i++) {
header[i] = get_from_fpga_stream(bitstream_version, compressed_fpga_stream, output_buffer);
}
-
+
// Check for a valid .bit file (starts with bitparse_fixed_header)
if(memcmp(bitparse_fixed_header, header, FPGA_BITSTREAM_FIXED_HEADER_SIZE) == 0) {
return true;
{
//Dbprintf("DownloadFPGA(len: %d)", FpgaImageLen);
-
+
int i=0;
AT91C_BASE_PIOA->PIO_OER = GPIO_FPGA_ON;
AT91C_BASE_PIOA->PIO_PER = GPIO_FPGA_ON;
- HIGH(GPIO_FPGA_ON); // ensure everything is powered on
+ HIGH(GPIO_FPGA_ON); // ensure everything is powered on
SpinDelay(50);
LED_D_ON();
// These pins are inputs
- AT91C_BASE_PIOA->PIO_ODR =
- GPIO_FPGA_NINIT |
- GPIO_FPGA_DONE;
+ AT91C_BASE_PIOA->PIO_ODR =
+ GPIO_FPGA_NINIT |
+ GPIO_FPGA_DONE;
// PIO controls the following pins
- AT91C_BASE_PIOA->PIO_PER =
- GPIO_FPGA_NINIT |
- GPIO_FPGA_DONE;
+ AT91C_BASE_PIOA->PIO_PER =
+ GPIO_FPGA_NINIT |
+ GPIO_FPGA_DONE;
// Enable pull-ups
AT91C_BASE_PIOA->PIO_PPUER =
GPIO_FPGA_NINIT |
LOW(GPIO_FPGA_DIN);
// These pins are outputs
AT91C_BASE_PIOA->PIO_OER =
- GPIO_FPGA_NPROGRAM |
- GPIO_FPGA_CCLK |
+ GPIO_FPGA_NPROGRAM |
+ GPIO_FPGA_CCLK |
GPIO_FPGA_DIN;
// enter FPGA configuration mode
}
DownloadFPGA_byte(b);
}
-
+
// continue to clock FPGA until ready signal goes high
i=100000;
while ( (i--) && ( !(AT91C_BASE_PIOA->PIO_PDSR & GPIO_FPGA_DONE ) ) ) {
//----------------------------------------------------------------------------
-// Check which FPGA image is currently loaded (if any). If necessary
+// Check which FPGA image is currently loaded (if any). If necessary
// decompress and load the correct (HF or LF) image to the FPGA
//----------------------------------------------------------------------------
void FpgaDownloadAndGo(int bitstream_version)
{
z_stream compressed_fpga_stream;
uint8_t output_buffer[OUTPUT_BUFFER_LEN] = {0x00};
-
+
// check whether or not the bitstream is already loaded
- if (downloaded_bitstream == bitstream_version)
+ if (downloaded_bitstream == bitstream_version) {
+ FpgaEnableTracing();
return;
+ }
// make sure that we have enough memory to decompress
- BigBuf_free(); BigBuf_Clear_ext(false);
-
+ BigBuf_free(); BigBuf_Clear_ext(false);
+
if (!reset_fpga_stream(bitstream_version, &compressed_fpga_stream, output_buffer)) {
return;
}
}
inflateEnd(&compressed_fpga_stream);
-
+
// turn off antenna
FpgaWriteConfWord(FPGA_MAJOR_MODE_OFF);
-
+
// free eventually allocated BigBuf memory
- BigBuf_free(); BigBuf_Clear_ext(false);
-}
+ BigBuf_free(); BigBuf_Clear_ext(false);
+}
//-----------------------------------------------------------------------------
// The bit format is: C3 C2 C1 C0 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
// where C is the 4 bit command and D is the 12 bit data
//-----------------------------------------------------------------------------
-void FpgaSendCommand(uint16_t cmd, uint16_t v)
-{
+void FpgaSendCommand(uint16_t cmd, uint16_t v) {
SetupSpi(SPI_FPGA_MODE);
- while ((AT91C_BASE_SPI->SPI_SR & AT91C_SPI_TXEMPTY) == 0); // wait for the transfer to complete
- AT91C_BASE_SPI->SPI_TDR = AT91C_SPI_LASTXFER | cmd | v; // send the data
+ AT91C_BASE_SPI->SPI_TDR = AT91C_SPI_LASTXFER | cmd | v; // write the data to be sent
+ while ((AT91C_BASE_SPI->SPI_SR & AT91C_SPI_TXEMPTY) == 0); // wait for the transfer to complete
}
+
//-----------------------------------------------------------------------------
// Write the FPGA setup word (that determines what mode the logic is in, read
// vs. clone vs. etc.). This is now a special case of FpgaSendCommand() to
// avoid changing this function's occurence everywhere in the source code.
//-----------------------------------------------------------------------------
-void FpgaWriteConfWord(uint8_t v)
-{
+void FpgaWriteConfWord(uint16_t v) {
FpgaSendCommand(FPGA_CMD_SET_CONFREG, v);
}
+//-----------------------------------------------------------------------------
+// enable/disable FPGA internal tracing
+//-----------------------------------------------------------------------------
+void FpgaEnableTracing(void) {
+ FpgaSendCommand(FPGA_CMD_TRACE_ENABLE, 1);
+}
+
+void FpgaDisableTracing(void) {
+ FpgaSendCommand(FPGA_CMD_TRACE_ENABLE, 0);
+}
+
//-----------------------------------------------------------------------------
// Set up the CMOS switches that mux the ADC: four switches, independently
// closable, but should only close one at a time. Not an FPGA thing, but
projects / proxmark3-svn / blobdiff